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| | ![[Lleihau]](/DXR.axd?r=1_9-POksh) Mynegai Cynhyrchu |
| Mynegai Gweithgynhyrchu |
| Bwyd, Diodydd a Thybaco | Tecstiliau, Dillad a Lledr | Pren, Cynhyrchion Papur ac Argraffu | Golosg a Chynhyrchion Petrolewm Puredig | Cemegau a Chynhyrchion Cemegol | Rwber a Phlastigau a Mwynau eraill heblaw Metel | Metelau Sylfaenol a Chynhyrchion Metel | Cynhyrchion Cyfrifiadurol ac Electronig | Cod Trydanol Cenedlaethol Peiriannau ac Offer | Offer Trafnidiaeth | Gweithgynhyrchu a Thrwsio arall | Peirianneg a Diwydiannau Cysylltiedig | Gweithgynhyrchu arall |
 Y Deyrnas Unedig | Cymru | Y Deyrnas Unedig | Cymru | Y Deyrnas Unedig | Cymru | Y Deyrnas Unedig | Cymru | Y Deyrnas Unedig | Cymru | Y Deyrnas Unedig | Cymru | Y Deyrnas Unedig | Cymru | Y Deyrnas Unedig | Cymru | Y Deyrnas Unedig | Cymru | Y Deyrnas Unedig | Cymru | Y Deyrnas Unedig | Cymru | Y Deyrnas Unedig | Cymru | Y Deyrnas Unedig | Cymru |
| 1999 | 94.4 | 93.9 | 181.9 | 288.5 | 124.3 | 71.3 | 147.4 | 132.9 | 93.0 | 64.2 | 111.8 | 92.1 | 112.4 | 164.3 | 138.5 | 110.7 | 110.2 | 91.0 | 61.1 | 44.7 | 103.7 | 48.2 | 108.0 | 70.2 | 111.1 | 59.6 |
| 1999 | 1999 C1 | 94.4 | 96.4 | 186.4 | 321.2 | 122.0 | 56.2 | 154.1 | 135.6 | 88.9 | 62.9 | 110.8 | 92.0 | 109.7 | 174.1 | 135.3 | 104.9 | 111.0 | 82.5 | 60.6 | 44.3 | 102.6 | 47.3 | 106.5 | 66.6 | 109.7 | 55.7 |
| 1999 C2 | 94.2 | 97.5 | 181.8 | 287.0 | 124.5 | 71.5 | 149.4 | 140.8 | 91.6 | 62.9 | 111.6 | 89.4 | 110.5 | 161.8 | 135.7 | 103.0 | 110.4 | 81.4 | 59.4 | 45.1 | 102.4 | 43.7 | 106.3 | 66.0 | 110.6 | 57.2 |
| 1999 C3 | 94.7 | 94.6 | 178.1 | 263.8 | 126.3 | 77.9 | 142.3 | 130.7 | 94.1 | 65.4 | 112.9 | 93.0 | 114.6 | 157.7 | 140.5 | 113.7 | 110.1 | 101.7 | 62.2 | 46.2 | 105.6 | 48.9 | 108.8 | 73.3 | 112.7 | 61.6 |
| 1999 C4 | 94.1 | 87.0 | 181.3 | 281.9 | 124.5 | 79.6 | 143.9 | 124.6 | 97.3 | 65.5 | 111.7 | 94.1 | 114.9 | 163.6 | 142.4 | 121.4 | 109.5 | 98.4 | 62.2 | 43.4 | 104.1 | 53.0 | 110.3 | 74.7 | 111.3 | 63.9 |
| 2014 | 100.9 | 108.3 | 104.7 | 128.6 | 100.7 | 110.5 | 99.0 | 102.7 | 98.1 | 103.9 | 96.7 | 73.3 | 103.3 | 98.9 | 102.7 | 96.4 | 115.5 | 100.0 | 90.6 | 93.1 | 96.6 | 80.5 | 101.8 | 94.6 | 97.8 | 84.0 |
| 2014 | 2014 C1 | 99.7 | (r) 109.0 | 109.1 | 120.3 | 99.5 | 107.4 | 101.2 | 137.0 | 97.7 | 104.6 | 96.1 | 70.8 | 102.9 | (r) 99.5 | 101.8 | 96.5 | 116.4 | 96.5 | 88.3 | 93.1 | 94.9 | 76.4 | 100.8 | 94.0 | 96.5 | 80.7 |
| 2014 C2 | 100.5 | (r) 113.6 | 109.4 | 128.0 | 100.1 | 115.0 | 99.3 | 119.3 | 98.2 | 104.1 | 95.8 | (r) 77.0 | 102.3 | (r) 99.0 | 101.2 | 91.3 | 117.4 | 90.1 | 91.0 | 95.1 | 95.2 | 72.7 | 102.4 | 93.7 | 96.7 | (r) 81.0 |
| 2014 C3 | 101.1 | 109.5 | 101.9 | 138.1 | 102.1 | 114.2 | 96.5 | 86.5 | 98.6 | 103.2 | 97.3 | 72.9 | 104.3 | (r) 100.0 | 103.0 | (r) 101.4 | 115.8 | 97.5 | 90.5 | (r) 95.3 | 98.1 | 70.0 | 101.8 | (r) 97.2 | 99.0 | 78.1 |
| 2014 C4 | 102.2 | (r) 101.2 | 98.6 | 127.9 | 101.2 | 105.5 | 99.1 | 67.8 | 98.0 | 103.9 | 97.5 | (r) 72.4 | 103.5 | (r) 97.2 | 104.9 | (r) 96.6 | 112.2 | 116.0 | 92.6 | 88.8 | 98.4 | 102.8 | 102.2 | (r) 93.3 | 99.0 | (r) 96.3 |
| 2015 | 100.7 | 101.4 | 102.3 | 94.2 | 101.5 | 100.7 | 101.4 | 101.4 | 100.9 | 112.0 | 98.2 | 83.8 | 102.9 | 102.0 | 101.2 | 100.3 | 100.6 | 95.1 | 96.2 | 97.2 | 95.7 | 87.9 | 99.0 | 97.9 | 98.1 | 89.5 |
| 2015 | 2015 C1 | 101.2 | (r) 102.2 | 100.6 | 104.0 | 102.6 | 95.5 | 99.3 | 95.7 | 101.4 | 116.7 | 99.2 | (r) 85.3 | 106.0 | (r) 97.1 | 101.2 | (r) 104.3 | 104.1 | 100.9 | 93.6 | 91.4 | 97.4 | (r) 81.7 | 98.9 | (r) 95.9 | 99.4 | 85.8 |
| 2015 C2 | 99.8 | (r) 100.6 | 104.9 | 102.3 | 101.1 | 96.8 | 93.3 | 99.8 | 100.4 | 102.9 | 98.9 | (r) 77.5 | 104.9 | (r) 104.1 | 102.3 | 102.2 | 102.0 | 88.7 | 95.7 | (r) 95.0 | 97.4 | 86.8 | 99.3 | (r) 96.4 | 98.9 | 86.6 |
| 2015 C3 | 100.8 | 98.8 | 101.3 | 86.1 | 100.9 | 107.0 | 104.8 | 103.4 | 101.3 | 114.2 | 97.5 | (r) 88.3 | 102.1 | (r) 102.9 | 101.3 | (r) 95.0 | 99.6 | 103.4 | 96.6 | (r) 101.4 | 93.6 | 92.5 | 99.0 | (r) 99.8 | 96.8 | 94.2 |
| 2015 C4 | 101.2 | (r) 104.1 | 102.4 | 84.3 | 101.3 | 103.7 | 108.0 | 106.8 | 100.3 | (r) 114.1 | 97.1 | (r) 84.0 | 98.4 | (r) 103.8 | 100.1 | (r) 99.6 | 96.8 | 87.3 | 98.8 | (r) 101.1 | 94.5 | (r) 90.7 | 98.9 | 99.4 | 97.2 | 91.4 |
| 2016 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 |
| 2016 | 2016 C1 | 100.5 | (r) 101.0 | 102.4 | 82.8 | 99.6 | 100.2 | 97.3 | 99.7 | 99.1 | (r) 104.4 | 99.6 | (r) 94.3 | 100.0 | (r) 106.1 | 98.3 | (r) 100.0 | 98.5 | 87.2 | 96.9 | (r) 93.7 | 98.2 | (r) 88.3 | 97.5 | (r) 94.8 | 99.1 | (r) 92.1 |
| 2016 C2 | 101.1 | (r) 95.9 | 100.6 | 96.7 | 100.7 | 108.6 | 99.3 | 100.1 | 100.6 | 100.5 | 101.1 | (r) 98.1 | 100.0 | (r) 101.6 | 99.4 | 103.6 | 99.6 | 99.4 | 102.4 | (r) 104.1 | 100.9 | (r) 108.2 | 100.7 | (r) 103.5 | 100.9 | (r) 105.7 |
| 2016 C3 | 99.4 | 96.5 | 100.0 | 108.9 | 99.7 | 97.8 | 99.3 | 99.1 | 98.3 | (r) 96.9 | 99.5 | 99.2 | 100.1 | (r) 93.7 | 99.0 | (r) 94.8 | 100.8 | 105.5 | 100.2 | (r) 98.2 | 100.8 | 93.1 | 100.0 | (r) 98.0 | 100.1 | 95.7 |
| 2016 C4 | 99.1 | (r) 106.7 | 97.0 | 111.6 | 100.0 | 93.5 | 104.0 | 101.0 | 102.0 | 98.2 | 99.9 | (r) 108.4 | 99.9 | (r) 98.6 | 103.2 | (r) 101.6 | 101.1 | 107.9 | 100.5 | (r) 104.0 | 100.1 | (r) 110.3 | 101.8 | (r) 103.8 | 100.0 | (r) 106.5 |
| 2017 | 99.7 | 98.3 | 100.2 | 127.9 | 101.1 | 99.2 | 101.4 | 96.3 | 100.2 | 107.7 | 99.6 | 108.0 | 101.4 | 108.1 | 104.3 | 103.0 | 107.2 | 129.9 | 103.1 | 106.7 | 106.8 | 100.1 | 104.1 | 107.5 | 102.7 | 101.7 |
| 2017 | 2017 C1 | 100.7 | (r) 96.6 | 99.2 | 102.8 | 101.2 | 92.4 | 101.9 | 97.6 | 98.3 | (r) 104.9 | 99.4 | (r) 106.4 | 99.8 | (r) 106.3 | 101.3 | (r) 95.8 | 105.1 | 116.3 | 102.8 | (r) 108.8 | 107.5 | (r) 119.6 | 103.0 | (r) 105.9 | 102.9 | (r) 110.9 |
| 2017 C2 | 99.9 | (r) 98.5 | 99.4 | 136.7 | 100.8 | 95.5 | 104.6 | 98.9 | 100.9 | 107.8 | 99.6 | (r) 109.4 | 100.2 | (r) 109.0 | 103.0 | (r) 99.5 | 103.4 | 128.5 | 101.5 | (r) 106.0 | 104.2 | 97.9 | 101.6 | (r) 106.0 | 101.7 | (r) 100.0 |
| 2017 C3 | 98.9 | (r) 100.7 | 100.6 | 139.0 | 100.4 | 100.3 | 100.0 | 96.7 | 100.3 | (r) 113.5 | 99.2 | 111.1 | 100.4 | (r) 111.5 | 105.0 | (r) 110.0 | 108.0 | 142.5 | 104.0 | (r) 103.9 | 108.2 | (r) 88.9 | 104.8 | (r) 108.5 | 102.9 | 96.4 |
| 2017 C4 | 99.4 | (r) 97.5 | 101.7 | 132.9 | 102.0 | 108.8 | 99.1 | 91.9 | 101.5 | (r) 104.6 | 100.2 | (r) 105.0 | 105.2 | (r) 105.7 | 108.0 | (r) 106.6 | 112.5 | 132.2 | 104.3 | (r) 108.2 | 107.2 | (r) 93.9 | 107.0 | (r) 109.7 | 103.4 | (r) 99.6 |
| 2018 | 101.4 | 110.9 | 96.9 | 141.7 | 100.7 | 110.6 | 97.6 | 92.1 | 102.8 | 100.9 | 97.5 | 98.2 | 99.8 | 95.3 | 113.5 | 106.8 | 110.3 | 105.8 | 101.8 | 106.6 | 105.0 | 98.8 | 107.8 | 106.6 | 101.3 | 101.1 |
| 2018 | 2018 C1 | 99.5 | (r) 108.3 | 97.4 | 126.6 | 100.2 | 107.8 | 92.7 | 76.4 | 100.8 | (r) 93.0 | 96.8 | (r) 101.5 | 102.4 | (r) 95.1 | 113.2 | (r) 106.6 | 114.5 | 110.4 | 105.1 | (r) 105.8 | 106.3 | (r) 101.4 | 110.0 | (r) 106.4 | 101.4 | (r) 102.7 |
| 2018 C2 | 101.4 | (r) 107.8 | 97.8 | 144.7 | 100.5 | 108.8 | 97.0 | 97.8 | 102.9 | (r) 107.4 | 97.6 | (r) 97.8 | 99.5 | (r) 96.5 | 113.5 | (r) 107.8 | 110.7 | 103.7 | 102.0 | (r) 105.6 | 104.9 | 106.2 | 107.8 | (r) 106.0 | 101.2 | (r) 104.8 |
| 2018 C3 | 102.8 | (r) 112.6 | 97.8 | 148.6 | 101.0 | 110.3 | 101.7 | 99.2 | 102.2 | (r) 98.2 | 98.6 | 95.8 | 100.5 | (r) 94.7 | 112.9 | (r) 108.3 | 108.4 | 103.5 | 101.8 | (r) 108.4 | 104.5 | (r) 97.9 | 107.5 | (r) 108.0 | 101.6 | (r) 100.0 |
| 2018 C4 | 101.8 | (r) 114.9 | 94.7 | 146.8 | 101.2 | 115.4 | 98.9 | 95.1 | 105.2 | 105.0 | 97.0 | (r) 97.5 | 96.8 | (r) 94.9 | 114.6 | (r) 104.5 | 107.6 | 105.6 | 98.2 | (r) 106.5 | 104.0 | (r) 89.5 | 105.9 | (r) 105.9 | 100.9 | (r) 96.8 |
| 2019 | (r) 102.6 | 124.7 | (r) 95.9 | 121.3 | (r) 99.8 | 123.5 | (r) 100.4 | 92.1 | (r) 103.1 | (r) 115.5 | (r) 94.1 | 91.7 | 99.4 | (r) 90.3 | (r) 114.0 | (r) 113.2 | (r) 103.2 | 93.2 | (r) 95.9 | (r) 109.0 | (r) 101.7 | (r) 77.5 | (r) 102.8 | (r) 108.9 | (r) 98.7 | 90.4 |
| 2019 | 2019 C1 | (r) 104.4 | (r) 121.3 | (r) 97.0 | 114.3 | (r) 102.7 | 124.9 | 103.6 | 86.2 | (r) 108.9 | (r) 118.6 | (r) 96.2 | (r) 91.2 | (r) 101.7 | (r) 96.5 | (r) 115.5 | (r) 111.9 | (r) 106.8 | 102.3 | (r) 98.4 | (r) 111.8 | (r) 102.5 | (r) 65.0 | 105.8 | (r) 111.1 | (r) 100.6 | (r) 83.6 |
| 2019 C2 | 101.8 | (r) 125.4 | (r) 95.8 | (r) 120.1 | (r) 100.3 | 119.3 | (r) 99.2 | 93.3 | (r) 102.4 | (r) 109.7 | (r) 94.5 | (r) 89.7 | (r) 99.1 | (r) 89.7 | (r) 114.5 | (r) 107.1 | (r) 104.2 | 89.0 | (r) 92.7 | (r) 110.1 | (r) 104.0 | 56.9 | (r) 101.4 | (r) 107.6 | (r) 99.8 | 77.5 |
| 2019 C3 | (r) 102.1 | (r) 126.5 | (r) 96.2 | 126.4 | (r) 99.1 | 122.6 | (r) 96.7 | 88.1 | (r) 101.6 | 114.1 | 92.8 | 91.1 | (r) 99.0 | (r) 88.3 | (r) 112.8 | (r) 110.6 | (r) 101.8 | (r) 87.8 | (r) 97.3 | (r) 108.6 | (r) 100.6 | 82.3 | 102.9 | (r) 107.5 | 97.6 | (r) 92.7 |
| 2019 C4 | 102.1 | (r) 125.6 | (r) 94.5 | 124.2 | (r) 97.3 | 127.0 | (r) 102.0 | 100.9 | (r) 99.7 | 119.5 | 93.0 | (r) 94.5 | (r) 97.8 | (r) 86.8 | (r) 113.1 | (r) 123.4 | (r) 100.0 | 93.5 | (r) 95.1 | (r) 105.4 | 99.5 | (r) 106.0 | (r) 101.0 | (r) 109.3 | (r) 96.7 | (r) 107.8 |
| 2020 | 2020 C1 | 101.9 | 112.9 | 86.4 | 87.2 | 96.7 | 118.7 | 97.8 | 87.8 | 108.5 | 116.8 | 93.7 | 96.5 | 97.0 | 70.7 | 112.5 | 109.4 | 91.3 | 92.1 | 88.3 | 87.7 | 98.2 | 72.9 | 93.5 | 93.9 | 96.3 | 87.9 |
Mynegai Gweithgynhyrchu (2016=100) yn ôl chwarter ac ardal
